Water back for hot-air and other furnaces



July 10, 1923.

J. HoPFr-:NTHALER ET Al.'

WATER BACK FOR HOT AIR AND OTHER FURNCES Filed Feb. 2'/ 1922 PatentedJuly l0, i923.

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' JOSEPH HOEEENTHALER AND CHARLES H. FISCHER, OF-PHILADELPHIA, PENNSYL-VANIA.

WATER BACK FOB HOT-AIR .AND OTHER FURNACES.

Application :tiled February 27, 1922. Serial No. 539,463.

To all whom t may concern.'

Be it known that we, JOSEPH HoPrnN- 'tirannia and CHARLns H. FISCHER,citizens of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulTater Baci; for Hot-Air and Other Furnaces, of which the following is aspecication.

Our invention consists of a water back for a hot air and hot waterheater, a furnace, or the like, the same being adapted to be supportedon a member within the fire pot of the heater, etc., so as to relievethe water supply andy outlet pipes of so supporting the water baclr.

The invention is satisfactorily illustrated in the accompanying drawing,but the important instrumentalities thereof may be varied, and so it isto be understood that the invention is not limited to the specificdetails shown and described, as long as they are within the spirit o-rscope of the claims.

Figure 1 represents a top or plan view of a water back embodying ourinvention.

Figure 2 represents a perspective view thereof partly broken away.

Figure 3 represents a vertical section on line 3 3, Figure l.

Similar numerals of reference indicate corresponding parts in the gures.

Referring to the drawing.

1 designates the water back which comprises a hollow body formed of thefront wall 2, the rear wall 3, the side walls 4, the bottom wall 5, thecap plate 6 at the top, the interior diaphragm 7 which depends from theunderside of the cap plate to near the bottoni of the body so as to formthe passage S between the lower end of said diaphragm and the bottomforming a communication between the opposite side portion of said body,for the attachment of the pipe 10 which supplies water to the bodybetween the opposite side portions of said body the nipple 11 on saidcap plate opposite to nipple 9 for the attachment of the pipe 12 for theoutlet of the hot water from the body tothe place of service, said pipes10 and 12 being shown dotted in Figure 1, and the flange 13, the latterbeing a rearward or outward extension of the cap plate 6.

It will be seen owing to the diaphragm the nipple 9 on the cap plateofthe body, flows through the passage 8` and enters the other side portionof the body and rises therein to its outlet, whereby it` isdoubly-subjected, due to its two courses, to the heat of the furnace,the effect of which is evident.

On the interior of the wall 14 of the heater, etc., is the horizontallyextending shoulder 15 on whichthe flange l3-is seated and so the waterback is firmly and properly supported on said Harige suspended withinthe fire pot, and the pipes 10 and 12 are relieved of any materialweight of the water back, and the openings in the' wall 14 through theupper part of which said pipes pass are not liable to be strainel andenlarged by any downward pull-of thewater back since such pull isimposed by the flange .13 on' the shoulder 15 but as said pipes passthrough the adjacent portion of the wall 14 above the water back theyassist in retaining the latter against the wall 14 and so steady it inposition.

Having thus described our invention what we claim as new and desire tosecure by Letters Patent, is y 1. A water back for a heater of thecharacter stated having a vertically-disposed body, and a closing capplate provided with a flange outwardly extended for contact with anoffset shoulder within the furnace, there being a depending diaphragmwithin the body extending to nearly the bottom.

2. A water back for a heater comprising a hollow body, a cap plateforming the closure for the upper end thereof, said body having adepending diaphragm extended nearly to the bottom, and said cap platehaving a lateral flange projecting beyond the wall of the said bod-y forseating on an offset shoulder member within the irepot of the heaterwhereby said water back isV suspendedv within the firepot.

3. As an improved article of manufacture, a'water back for a heatercomprising a hollow body vertically elongated and having a cap plateconstituting a closure for the upper en d thereof and provided with alateral flange, and a verticaldiaphragm withformed with a verticaldiaphragm terminating at a distance from the bottom of the 10 body, saidbody being dependently supportedl and the cap plate having inlet andoutlet npplesdisposed upon opposite sides of said diaphragm.

JOSEPH HOPFENTHALER. CHARLES H. FISCHER.

